Method of lining water wells and noncorrosive liner therefor



Sept. 27, 1966 r J. R. BEYLIK 3,275,081

METHOD OF LINING WATER WELLS AND NONCORROSIVE LINER THEREFOR Filed Nov. 26, 1965 a :5 SO

INVENTOR. JOHN R. .BEVL/K mwb A-rtozms vs United States Patent Office 3,275,081 Patented Sept. 27, 1966 3,275,081 METHOD OF LINING WATER WELLS AND NON- CORROSIVE LINER THEREFOR John R. Beylik, 11118 Luitwieler Ave., Whittier, Calif. Filed Nov. 26, 1963, Ser. No. 326,035 1 Claim. (Cl. 166-228) This invention has to do generally with the provision of non-corrosive liners or casingin water wells located in regions where the water is highly corrosive and conventional metal casing cannot be used satisfactorily and more particularly with a new and improved perforate well liner, and with methods of setting or landing casing in the bore hole.

An object of the invention is to provide a new and improved method of lining water wells or the like with noncorrosive casing. In this connection it is an object to provide a method which utilizes conventional drill pipe to support and lower the casing into place in the well.

Another object is to provide a novel method for lowering and setting casing by means of a cable.

A further object is to provide a new and improved noncorrosive perforate well liner or casing.

Still another object is to provide a novel landing plate for use in lowering casing to the bottom of the well.

A further object is to provide novel spacer means for use in centering the casing in the well and for lending support to the casing at the joints.

These and other objects will be apparent from the drawing and the following description. Referring to the drawmg:

FIG. 1 is a diagrammatic view of a string of casing in place in awell, with the ground in section;

FIG. 2 is a view in section through the ground showing the well hole fragmentarily and showing the lowering of the easing into the well;

FIG. 3 is an enlarged central sectional elevational view of the landing plate showing a casing seated therein and the drill pipe coupled thereto;

FIG. 4 is an elevational view of a perforate casing or liner section;

FIG. 5 is a sectional view on line 55 of FIG. 4, but on a larger scale;

FIG. 6 is an enlarged elevational view of a joint between casing sections and showing the centering means, the View being partially in section;

FIG. 7 is a diagrammatic view of a well showing a method of landing casing therein by means of a cable; and

FIG. 8 is an enlarged cross sectional view of a special casing joint collar.

More particularly describing the invention, referring first to FIGS. 1 .to 6, numeral 11 designates a well or bore hole in the ground 12, the surface of the ground being indicated at 13. A string or length of casing designated generally by 15 is shown within the well and this includes several perforate sections 16 and imperforate sections 17. The casing is shown resting upon what will be termed a landing plate 18 at the bot-tom of the well. 20 designates the casing joint collars between the individual casing sections and these have flared interior surfaces 21 to receive the beveled ends 22 of the casing sections. The collars also are provided with seal rings 23. Preferably at each joint I provide means 25 for centering the casing in the well and stiffening the joint.

In the lining of water wells where the Water is highly corrosive, I provide a lining or casing made up of a plurality of sections 16 and 17 of a non-corrosive material and preferably of asbestos-cement pipe or tubing. The collars 20 are made of the same material. Due to the fact that the individual sections are received in the collars by what may be termed merely a push fit, the casing is of course not self-supporting in tension in the sense of being capable of being suspended as it is lowered into the well, and therefore it is a principal feature of my invention that I lower the casing or suspend it on the regular steel drill pipe, designated by numeral 27, and this in turn is handled in the conventional way by means of a rotary table, derrick and the conventional hoisting apparatus (not shown). In order to accomplish this, I provide the aforementioned landing plate 18. This comprises a circular or other shaped plate-like body 30 provided with downwardly extending sharp projections 31 which have been shown as triangular plates, although other types of projections might be used. At the center of the plate on its upper side, I provide a conventional drill pipe tool joint or box 32 which is secured by welds,

. and, concentric with this, a collar A which is in all respects the same as the collars 20 between sections of the casing. To anchor the collar in place, I provide a body of concrete 33 in the space between the lower half of the collar and the tool joint member 32.

'In carrying out my method, with the landing plate 18 at the region of the surface of the ground 13, I rest one or more sections of casing (16 or 17) thereon, the lowermost section fitting into the collar 20A of the landing plate as shown in FIG. 3. I then attach the drill pipe to the landing plate (or this may be attached first if more convenient) and'lower the assembly partway into the well. Subsequently then additional lengths of easing are added as are additional lengths of the drill pipe so that the whole assembly is intermittently advanced or lowered into the well as the sections of casing and drill pipe are added. It will be understood, of course, that the drill pipe is supported at some point near the surface of the ground as by slips in a rotary table or the like when the upper end is uncoupled from the conventional traveling block of the derrick hoisting equipment in order to add the additional section or sections of casing and drill pipe. Ultimately the landing plate 18 reaches the bottom of the bore hole or well and, due to the weight of the casing and drill pipe thereon, the projections 31 are driven into the ground and then serve to anchor the plate against rotary movement. The drill pipe can then be uncoupled from the tool joint 32 since it may be unthreaded therefrom because the landing plate is anchored in the earth against turning.

As the sections of casing are made up with the collars 20 therebetween, I provide the means 25 for centering the casing in the well. This means comprises a plurality of members 40 which may be of wood or other suitable material, each having an elongated body 41 with a recess 42 on its inner edge to freely receive the collar. The ends 43 are of reduced size and the various members 40, of which there should be at least 3 at each joint, are held to gether by circumferential straps 44 of a suitable corrosionresistant metal such as stainless steel. Ultimately the space between the wall of the bore hole and the casing is filled with gravel, not shown.

As previously indicated, the individual casing sections 15 are made of a standard or conventional asbestoscement pipe. The perforate sections 16 are of the same material but provided with a plurality of transverse slots 50 and these are arranged in longitudinal rows as best seen in FIG. 4, with the slots in one row staggered relative to those in the other row in order to provide maximum strength. The rows of slots are also spaced substantially circumferentially of the casing to provide an unbroken beam section of casing extending from end to end. Preferably the slots are formed as shown in FIG. 5 to be relatively wide at their outer ends and relatively narrow at their inner ends. This can be accomplished by using 3 a circular saw on the outside of the casing to provide the slots.

Referring now to FIGS. 7 and 8, in some cases it is necessary to lower .the casing sections 16 and ,17 one or two at a time on a line or cable; To accomplish this provided with a joint collar 20 at its upper end before .the casing is lowered into the well. 'The collar should be cemented in place to prevent its separation from the casing proper and this may be done by an epoxy resin cement or other suitable substance.

7 Subsequent casings to be lowered into the well are provided at their upper ends with a'joint collar 20 ccmented in place and at their lower ends with aspecial guide collar 58having axial-holes 59 spaced diametrically so as to receive the guidelines 56, respectively. Holes 59 are also provided in the collars 20. The guidelines are threaded through the special guide collars 58 and regular collars 20 and the casing is lowered into the well by means of a tool 60 on the lower end of a cable or line 61. This tool is of a type which automatically disengages itself from the casing when it enters the casing already in the well.

It will be apparent that as the new casing section is lowered on the line, it will necessarily be guided accurately into the joint collar 20 at the upper end of the casing in the hole by the guidelines 56, Other casings can then be lowered one or two or more at a time in the same manner.

Although I have shown and described preferred forms tions being disposed in of my invention, I contemplate that various changes and modifications can be made therein without departing from the invention, the scope of which is indicated by the following claim. By way of example, it is not necessary that the slots of casing sections 16 be staggered as heretofore described.

I claim:

A unitary non-corrosive liner section for water wells comprising a cylindrical body of asbestos-cement'having a plurality of perforations, each perforation being in the form of an elongated slot extending transversely of the body and defined by a pair of parallel side walls extending in planes normal to the longitudinal axis of the bodyand by a pair of outwardly diverging end walls, said perforathe body. 7 7

References Cited by the Examiner UNITEDSTATES PATENTS 576,784 2/1897. Kaufi'man 166-242 596,081 5/1897 Muirhead 166-242 1,529,964 3/1925 Proctor 166-46 1,833,457 11/1931 Dunlap 166-235 1,896,110 2/1933 Simmons 166-46 2,226,804 12/1940 Carroll 166-227 2,250,871 7/1941 Lumbert 166-235 2,757,743 8/ 1956 Lillie et al 166-227 3,072,195 l/1963 Kluck 166-241 3,080,926 3/ 1963 Remp 166-241 3,095,041 6/1963 Rasmussen 166-242 X FOREIGN PATENTS 95,504 8/ 1960 Netherlands.

CHARLES E. OCONNELL, Primary Examiner.

BENJAMIN HERSH, JACOB L; NACKENOFF,

Examiners.

I. A. CALVERT, J. A. LEPPINK, Assistant Examiners.

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